Improving plane wave ultrasound imaging through real-time beamformation across multiple arrays.
Improving plane wave ultrasound imaging through real-time beamformation across multiple arrays.
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通过跨多个阵列的实时波束形成来改进平面波超声成像。
DOI：
10.1038/s41598-022-16961-2
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发表时间：
2022-08-04
影响因子：
4.6
通讯作者：
Ferrara, Katherine W.
中科院分区：
文献类型：
--
作者：
Foiret, Josquin;Cai, Xiran;Bendjador, Hanna;Park, Eun-Yeong;Kamaya, Aya;Ferrara, Katherine W.
超声成像是一种广泛使用的诊断工具，但在深部病变或肥胖患者的成像中具有局限性，其中大的深度与孔径尺寸比（f数）降低了图像质量。降低f数可以提高图像质量，在这项工作中，我们结合了三个商业阵列，以创建100 mm和384个元件的大成像孔径。为了在给定大量元件的情况下保持帧速率，利用所有三个阵列发射相干波前来实现平面波成像。在100 mm深度的线状目标上，横向分辨率显著提高;一个阵列（孔径的1/3）的横向分辨率为1.27 mm，全孔径的横向分辨率为0.37 mm。在创建虚拟接收元件以填充阵列间间隙之后，自回归滤波器将源自阵列间间隙的栅瓣减少了− 5.2 dB。在校准的商业体模上，验证了扩展的视场和提高的空间分辨率。大孔径有利于使用基于奇异值分解的波束形成器进行像差校正。最后，在斯坦福大学机构审查委员会批准后，三阵列配置被应用于志愿者的肝脏成像，验证了增强分辨率的潜力。
Ultrasound imaging is a widely used diagnostic tool but has limitations in the imaging of deep lesions or obese patients where the large depth to aperture size ratio (f-number) reduces image quality. Reducing the f-number can improve image quality, and in this work, we combined three commercial arrays to create a large imaging aperture of 100 mm and 384 elements. To maintain the frame rate given the large number of elements, plane wave imaging was implemented with all three arrays transmitting a coherent wavefront. On wire targets at a depth of 100 mm, the lateral resolution is significantly improved; the lateral resolution was 1.27 mm with one array (1/3 of the aperture) and 0.37 mm with the full aperture. After creating virtual receiving elements to fill the inter-array gaps, an autoregressive filter reduced the grating lobes originating from the inter-array gaps by − 5.2 dB. On a calibrated commercial phantom, the extended field-of-view and improved spatial resolution were verified. The large aperture facilitates aberration correction using a singular value decomposition-based beamformer. Finally, after approval of the Stanford Institutional Review Board, the three-array configuration was applied in imaging the liver of a volunteer, validating the potential for enhanced resolution.
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影响因子：
4.6
作者：
Foiret J;Zhang H;Ilovitsh T;Mahakian L;Tam S;Ferrara KW
通讯作者：
Ferrara KW
影响因子：
10.6
作者：
Bottenus N;Long W;Zhang HK;Jakovljevic M;Bradway DP;Boctor EM;Trahey GE
通讯作者：
Trahey GE
影响因子：
10.6
作者：
Demene, Charlie;Deffieux, Thomas;Tanter, Mickael
通讯作者：
Tanter, Mickael
影响因子：
10.6
作者：
Denarie, Bastien;Tangen, Thor Andreas;Lovstakken, Lasse
通讯作者：
Lovstakken, Lasse
影响因子：
10.6
作者：
Bendjador, Hanna;Deffieux, Thomas;Tanter, Mickael
通讯作者：
Tanter, Mickael